Reland "Print display id as integer"

This reverts commit 14b8647ffd36bbe4c324f96b573afbcb41dfc53c.

Reason for revert: should not have been reverted in the first place

Change-Id: I98c3131277d35acdd8cc154235519f61121da59a
diff --git a/services/inputflinger/dispatcher/InputState.cpp b/services/inputflinger/dispatcher/InputState.cpp
index c2d2b7b..02bc368 100644
--- a/services/inputflinger/dispatcher/InputState.cpp
+++ b/services/inputflinger/dispatcher/InputState.cpp
@@ -338,9 +338,8 @@
         // it's unlikely that those two streams would be consistent with each other. Therefore,
         // cancel the previous gesture if the display id changes.
         if (motionEntry.displayId != lastMemento.displayId) {
-            LOG(INFO) << "Canceling stream: last displayId was "
-                      << inputEventSourceToString(lastMemento.displayId) << " and new event is "
-                      << motionEntry;
+            LOG(INFO) << "Canceling stream: last displayId was " << lastMemento.displayId
+                      << " and new event is " << motionEntry;
             return true;
         }